Improvement in refrigerating-cars



J-fE. WINANTS.

REFRIGERATING-CAR.

No.173,198. Patented Feb. 8, 1876.

NJERS. PHOTO-LITHOGRAFHER. WASHINGTON, D C.

UNITED STATES PATENT OFFICE.

JosIAE E. wINANTs, oF WILMINGTON, NORTH CAROLINA.

IMPROVEMENT IN REFRIGERATING-CARS.

specification forming part of Lettersratent No. 173,198, dated' February e, 1876 application ined January 12, 1875.

To all whom it may concern Beit known that I, JosIAn E. WINANTs, of the city of Wilmingtom'county of New Hanover, State of North Carolina, have invented a n ew and original Improvement in Refrigeratin'g-Cars, of which the following is a specification The object of this invention is to provide a means for cooling a car for the transportation of perishable articles. It consistsin applying to an ordinary freight-car a peculiar construe-- tion, whereby the heat contained in the cooling medium, after compression, is carried away byacurrent of air carried through or around the compression-chamber, all as hereinafter described.

, It is well known that when air is compressed to a density of two or more atmospheres, there is evolved a quantity of heat in proportion to its' pressure or density, which must be absorbed, and that, upon being released under pressure, it again absorbs heat and produces a degree of cold in proportion to its former density'.

Heretofore the method of' absorbing ,the

.heat evolved from compressed air-has been by the application of Water.

It will be at once apparent that the application of water to a cooling apparatus of the naturev above alluded to, in a railroadfcar, is not practicable, as the means for a constant supply of cool water is not available. It is proposed to substitute common air as a cool, ing medium, instead of using water, as above l stated. s

Referring to the drawings-in which Fi gurev l is a vertical section of an ordinary freightcar, showing the arrangement of the air-cooling apparatus; Fig. 2 is a plan section ofthe cooling apparatus taken on the line w at' of Fig. 1

A is the compressing air-pump. B is ythe receiver for holding the condensed air. C is the blower or fan. D is the shaft for driving the air-pump and fan, and receiving its motion from a belt connecting it with the axle of the car H, or any independent power. E E are pipes eration of the band on the shaft D, through o vthe crank K, they air is forced into the receiver B to the pressure of two or more atmospheres. At the same time motion from the shaft D is imparted, througha baud,'to the blower or fan C, supplying air to the outsidev surface, and through the pipes E ofthe receiver or drum B, and within the wooden oasingF, in

the direction ofthe arrows, as shown in the drawing.

Having fully described my invention, what -I claim. as new, and desire to secure by Letters Patent, i,-

1. The combination, with a receptacle provided with an air-compression chamber, of an' air-forcing mechanism, whereby a current of air is passed over or around such chamber to carryv away the heat evolved by condensation,

substantially as described. y 2. The combination, with a receptacle proI vided with a chamber for holdingcompres's'ed air, of an air-condensin g mechanism for klling suoli chamber with condensed air, and an air? forcing mechanism,fwherebya current of air is passed over or around such chamber, as and for the purposes specified.

3. The combination, with a receptacle pro y vided with a chamberfor compressed air, of a condensing mechanism, an air-forcing mechanism, and an expansion-chamber, the several parts being constructed and arranged substantially as described, whereby the compression chamber is filled with compressed air, and the vheat evolved by condensation is carried away, and the air afterward expanded, as and for the purposes set forth.

JOSIAH E. WINA'NTS.

Witnesses:

l BENJ. DURFEE,

-WFL H. APPLEToN. 

